CORIXA CORP
8-K, EX-10.1, 2000-10-16
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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<PAGE>   1
                                                                    Exhibit 10.1

                                VOTING AGREEMENT


         THIS VOTING AGREEMENT is entered into as of October 15, 2000, by and
between Coulter Pharmaceutical, Inc., a Delaware corporation ("Coulter"), and
_____________________ ("Stockholder").

                                    RECITALS

A.       Corixa Corporation, a Delaware corporation ("Corixa"), Clearwater
Acquisitions Corporation, a Delaware corporation and a wholly owned subsidiary
of Corixa ("Merger Sub"), and Coulter, are entering into an Agreement and Plan
of Merger of even date herewith (the "Merger Agreement") which provides (subject
to the conditions set forth therein) for the merger of Merger Sub into Coulter
(the "Merger").

B.       In order to induce Coulter to enter into the Merger Agreement,
Stockholder is entering into this Voting Agreement.

                                    AGREEMENT

         The parties to this Voting Agreement, intending to be legally bound,
agree as follows:

SECTION  1. CERTAIN DEFINITIONS

         For purposes of this Voting Agreement:

               (a) All capitalized terms used but not otherwise defined in this
Voting Agreement have the meanings given to them in the Merger Agreement.

               (b) "CORIXA COMMON STOCK" shall mean the common stock, $0.001 par
value per share, of Corixa.

               (c) "EXPIRATION DATE" shall mean the earlier of (i) the date upon
which the Merger Agreement is validly terminated, or (ii) the date upon which
the Merger becomes effective.

               (d) Stockholder shall be deemed to "OWN" or to have acquired
"OWNERSHIP" of a security if Stockholder: (i) is the record owner of such
security; or (ii) is the "beneficial owner" (within the meaning of Rule 13d-3
under the Securities Exchange Act of 1934) of such security.

               (e) "PERSON" shall mean any (i) individual, (ii) corporation,
limited liability company, partnership or other entity, or (iii) governmental
authority.

               (f) "SUBJECT SECURITIES" shall mean: (i) all securities of Corixa
(including all shares of Corixa Common Stock and all options, warrants and other
rights to acquire shares of

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<PAGE>   2
Corixa Common Stock) Owned by Stockholder as of the date of this Voting
Agreement; and (ii) all additional securities of Corixa (including all
additional shares of Corixa Common Stock and all additional options, warrants
and other rights to acquire shares of Corixa Common Stock) of which Stockholder
acquires Ownership during the period from the date of this Voting Agreement
through the Expiration Date.

               (g) A Person shall be deemed to have a effected a "TRANSFER" of a
security if such Person directly or indirectly: (i) sells, pledges, encumbers,
grants an option with respect to, transfers or disposes of such security or any
interest in such security; or (ii) enters into an agreement or commitment
contemplating the possible sale of, pledge of, encumbrance of, grant of an
option with respect to, transfer of or disposition of such security or any
interest therein.


SECTION  2. RESTRICTIONS ON TRANSFER OF SUBJECT SECURITIES

         2.1      NO TRANSFER OF SUBJECT SECURITIES. Stockholder agrees that,
during the period from the date of this Voting Agreement through the Expiration
Date, Stockholder shall not cause or permit any Transfer of any of the Subject
Securities or any interest therein to be effected, and any such attempted
Transfer shall be null and void; provided, however, that nothing in this Voting
Agreement shall restrict Stockholder's ability to exercise any options to
acquire shares of Corixa Common Stock.

         2.2      NO TRANSFER OF VOTING RIGHTS. Stockholder agrees that, during
the period from the date of this Voting Agreement through the Expiration Date,
Stockholder shall ensure that: (a) none of the Subject Securities is deposited
into a voting trust; and (b) no proxy is granted, and no voting agreement or
similar agreement is entered into, with respect to any of the Subject Securities
(other than pursuant to this Voting Agreement).


SECTION 3. VOTING OF SHARES

         3.1      VOTING AGREEMENT. Stockholder agrees that, during the period
from the date of this Voting Agreement through the Expiration Date:

               (a) at any meeting of stockholders of Corixa, however called,
Stockholder shall cause all outstanding shares of Corixa Common Stock that are
Owned by Stockholder as of the record date fixed for such meeting to be voted:

                  (i) in favor of the issuance of the shares of Corixa Common
         Stock in the Merger and in favor of each of the other actions
         contemplated by the Merger Agreement; and

                  (ii) against the following actions (other than the Merger and
         the other transactions contemplated by the Merger Agreement): (A) any
         extraordinary corporate transaction, such as a merger, consolidation or
         other business combination involving Corixa; (B) any sale, lease or
         transfer of a material amount of assets of Corixa (other than

                                       2
<PAGE>   3
         in the ordinary course of business); (C) any reorganization,
         recapitalization, dissolution or liquidation of any of Corixa; (D) any
         removal of or change in a majority of the board of directors of Corixa;
         (E) any amendment to Corixa's certificate of incorporation; (F) any
         material change in the capitalization of Corixa or Corixa's corporate
         structure; and (G) any other action that is inconsistent with the
         Merger or that is intended, or could reasonably be expected, to impede,
         interfere with, delay, postpone, discourage or adversely affect the
         Merger or any of the other transactions contemplated by the Merger
         Agreement or this Voting Agreement;

               (b) in the event written consents are solicited or otherwise
sought from stockholders of Corixa with respect to the issuance of the shares of
Corixa Common Stock in the Merger or with respect to any of the other actions
contemplated by the Merger Agreement, Stockholder shall cause to be executed,
with respect to all outstanding shares of Corixa Common Stock that are Owned by
Stockholder as of the record date fixed for the consent to the proposed action,
a written consent or written consents to such proposed action; and

               (c) in the event written consents are solicited or otherwise
sought from stockholders of Corixa with respect to any of the matters referred
to in clauses "(A)" through "(G)" of clause "(ii)" of paragraph "(a)" of this
Section 3.1, Stockholder shall cause to be executed, with respect to all
outstanding shares of Corixa Common Stock that are Owned by Stockholder as of
the record date fixed for the consent to the proposed action, a written consent
or written consents against such proposed action.

         3.2      PROXY. Contemporaneously with the execution of this Voting
Agreement: (i) Stockholder shall deliver to Coulter a proxy in the form attached
to this Voting Agreement as Exhibit A, which shall be irrevocable to the fullest
extent permitted by law, with respect to the shares referred to therein (the
"Proxy"); and (ii) Stockholder shall cause to be delivered to Coulter an
additional proxy (in the form attached hereto as Exhibit A) executed on behalf
of the record owner of any outstanding shares of Corixa Common Stock that are
owned beneficially (within the meaning of Rule 13d-3 under the Securities
Exchange Act of 1934), but not of record, by Stockholder.


SECTION 4. WAIVER OF APPRAISAL RIGHTS

         Stockholder hereby irrevocably and unconditionally waives, and agrees
to cause to be waived and to prevent the exercise of, any rights of appraisal,
any dissenters' rights and any similar rights relating to the Merger or any
related transaction that Stockholder or any other Person may have by virtue of
the ownership of any outstanding shares of Corixa Common Stock Owned by
Stockholder.


SECTION 5. LOCKUP AGREEMENT


                                       3
<PAGE>   4
         For a period of ninety (90) calendar days following the Effective Time,
Stockholder shall not Transfer or in any other way reduce Stockholder's risk of
ownership of or investment in any shares of Corixa Common Stock which
Stockholder currently owns or purchases or otherwise acquires after the
execution of this Voting Agreement, whether pursuant to the Merger or otherwise
(including any securities which may be paid as a dividend or otherwise
distributed thereon or with respect thereto or issued or delivered in exchange
or substitution therefor) (all such securities being referred to herein
collectively as "Restricted Corixa Securities"), or any option, right or other
interest with respect to any Restricted Corixa Securities; provided, however,
that nothing in this Agreement shall restrict Stockholder's ability to exercise
options to acquire shares of Corixa Common Stock (it being understood, however,
that any shares of Corixa Common Stock issued to Stockholder upon exercise of
such options shall become "Restricted Corixa Securities" that are subject to the
prohibitions described in this Section 5). Stockholder also understands and
agrees that stop transfer instructions may be given to Corixa's transfer agent
with respect to certificates evidencing the Restricted Corixa Securities to
enforce Stockholder's compliance with this Section 5. Notwithstanding anything
to the contrary contained in this Voting Agreement, this Section 5 shall have no
force or effect if the Merger Agreement is terminated.


SECTION 6. REPRESENTATIONS AND WARRANTIES OF STOCKHOLDER

         Stockholder hereby represents and warrants to Coulter as follows:

         6.1      AUTHORIZATION, ETC. Stockholder has the absolute and
unrestricted right, power, authority and capacity to execute and deliver this
Voting Agreement and the Proxy and to perform his obligations hereunder and
thereunder. This Voting Agreement and the Proxy have been duly executed and
delivered by Stockholder and constitute legal, valid and binding obligations of
Stockholder, enforceable against Stockholder in accordance with their terms,
subject to (i) laws of general application relating to bankruptcy, insolvency
and the relief of debtors, and (ii) rules of law governing specific performance,
injunctive relief and other equitable remedies.

         6.2      NO CONFLICTS OR CONSENTS. The execution and delivery of this
Voting Agreement and the Proxy by Stockholder do not, and the performance of
this Voting Agreement and the Proxy by Stockholder will not: (i) conflict with
or violate any law, rule, regulation, order, decree or judgment applicable to
Stockholder or by which he or any of his properties is or may be bound or
affected; or (ii) result in or constitute (with or without notice or lapse of
time) any breach of or default under, or give to any other Person (with or
without notice or lapse of time) any right of termination, amendment,
acceleration or cancellation of, or result (with or without notice or lapse of
time) in the creation of any encumbrance or restriction on any of the Subject
Securities pursuant to, any contract to which Stockholder is a party or by which
Stockholder or any of his affiliates or properties is or may be bound or
affected. The execution and delivery of this Voting Agreement and the Proxy by
Stockholder do not, and the performance of this Voting Agreement and the Proxy
by Stockholder will not, require any consent or approval of any Person.


                                       4
<PAGE>   5
         6.3      TITLE TO SECURITIES. As of the date of this Voting Agreement:
(a) Stockholder holds of record (free and clear of any encumbrances or
restrictions) the number of outstanding shares of Corixa Common Stock set forth
under the heading "Shares Held of Record" on the signature page hereof; (b)
Stockholder holds (free and clear of any encumbrances or restrictions) the
options, warrants and other rights to acquire shares of Corixa Common Stock set
forth under the heading "Options and Other Rights" on the signature page hereof;
(c) Stockholder Owns the additional securities of Corixa set forth under the
heading "Additional Securities Beneficially Owned" on the signature page hereof;
and (d) Stockholder does not directly or indirectly Own any shares of capital
stock or other securities of Corixa, or any option, warrant or other right to
acquire (by purchase, conversion or otherwise) any shares of capital stock or
other securities of Corixa, other than the shares and options, warrants and
other rights set forth on the signature page hereof.

         6.4      ACCURACY OF REPRESENTATIONS. The representations and
warranties contained in this Voting Agreement are accurate in all respects as of
the date of this Voting Agreement, will be accurate in all respects at all times
through the Expiration Date and will be accurate in all respects as of the date
of the consummation of the Merger as if made on that date.


SECTION 7. MISCELLANEOUS

         7.1      FURTHER ASSURANCES. From time to time and without additional
consideration, Stockholder shall execute and deliver, or cause to be executed
and delivered, such additional transfers, assignments, endorsements, proxies,
consents and other instruments, and shall take such further actions, as Coulter
may request for the purpose of carrying out and furthering the intent of this
Voting Agreement.

         7.2      NOTICES. Any notice or other communication required or
permitted to be delivered to either party under this Voting Agreement shall be
in writing and shall be deemed properly delivered, given and received (a) when
delivered by hand, or (b) two business days after sent by courier or express
delivery service or by facsimile, to the address or facsimile telephone number
set forth beneath the name of such party below (or to such other address or
facsimile telephone number as such party shall have specified in a written
notice given to the other party):

                  if to Stockholder:

                           at the address set forth below Stockholder's
                           signature on the signature page hereof


                                       5
<PAGE>   6
                  if to Coulter:

                           Coulter Pharmaceutical, Inc.
                           600 Gateway Blvd.
                           South San Francisco, CA  94080-7014
                           Attention:  President
                           Facsimile No.:  (650) 553-2728
                           Telephone No.:  (650) 553-2000

                  in each case with a copy to:

                           Cooley Godward LLP
                           Five Palo Alto Square
                           3000 El Camino Real
                           Palo Alto, CA  94306-2155
                           Attention:  James Kitch and Keith Flaum
                           Facsimile No.:  (650) 849-7400
                           Telephone No.:  (650) 843-5000

         7.3      SEVERABILITY. If any provision of this Voting Agreement or any
part of any such provision is held under any circumstances to be invalid or
unenforceable in any jurisdiction, then (a) such provision or part thereof
shall, with respect to such circumstances and in such jurisdiction, be deemed
amended to conform to applicable laws so as to be valid and enforceable to the
fullest possible extent, (b) the invalidity or unenforceability of such
provision or part thereof under such circumstances and in such jurisdiction
shall not affect the validity or enforceability of such provision or part
thereof under any other circumstances or in any other jurisdiction, and (c) the
invalidity or unenforceability of such provision or part thereof shall not
affect the validity or enforceability of the remainder of such provision or the
validity or enforceability of any other provision of this Voting Agreement. Each
provision of this Voting Agreement is separable from every other provision of
this Voting Agreement, and each part of each provision of this Voting Agreement
is separable from every other part of such provision.

         7.4      ENTIRE AGREEMENT. This Voting Agreement, the Proxy and any
other documents delivered by the parties in connection herewith constitute the
entire agreement between the parties with respect to the subject matter hereof
and thereof and supersede all prior agreements and understandings between the
parties with respect thereto. No addition to or modification of any provision of
this Voting Agreement shall be binding upon either party unless made in writing
and signed by both parties.

         7.5      ASSIGNMENT; BINDING EFFECT. Except as provided herein, neither
this Voting Agreement nor any of the interests or obligations hereunder may be
assigned or delegated by Stockholder and any attempted or purported assignment
or delegation of any of such interests or obligations shall be void. Subject to
the preceding sentence, this Voting Agreement shall be binding upon Stockholder
and his heirs, estate, executors, personal representatives, successors and
assigns, and shall inure to the benefit of Coulter and its successors and
assigns. Without

                                       6
<PAGE>   7
limiting any of the restrictions set forth in Section 2 or elsewhere in this
Voting Agreement, this Voting Agreement shall be binding upon any Person to whom
any Subject Securities are transferred. Nothing in this Voting Agreement is
intended to confer on any Person (other than Coulter and its successors and
assigns) any rights or remedies of any nature.

         7.6      SPECIFIC PERFORMANCE. The parties agree that irreparable
damage would occur in the event that any of the provisions of this Voting
Agreement or the Proxy was not performed in accordance with its specific terms
or was otherwise breached. Stockholder agrees that, in the event of any breach
or threatened breach by Stockholder of any covenant or obligation contained in
this Voting Agreement or in the Proxy, Coulter shall be entitled (in addition to
any other remedy that may be available to it, including monetary damages) to
seek and obtain (a) a decree or order of specific performance to enforce the
observance and performance of such covenant or obligation, and (b) an injunction
restraining such breach or threatened breach. Stockholder further agrees that
neither Coulter nor any other Person shall be required to obtain, furnish or
post any bond or similar instrument in connection with or as a condition to
obtaining any remedy referred to in this Section 7.6, and Stockholder
irrevocably waives any right he may have to require the obtaining, furnishing or
posting of any such bond or similar instrument.

         7.7      GOVERNING LAW; WAIVER OF JURY TRIAL. This Voting Agreement and
the Proxy shall be construed in accordance with, and governed in all respects
by, the laws of the State of Delaware (without giving effect to principles of
conflicts of laws). STOCKHOLDER IRREVOCABLY WAIVES THE RIGHT TO A JURY TRIAL IN
CONNECTION WITH ANY LEGAL PROCEEDING RELATING TO THIS VOTING AGREEMENT OR THE
PROXY OR THE ENFORCEMENT OF ANY PROVISION OF THIS VOTING AGREEMENT OR THE PROXY.

         7.8      COUNTERPARTS. This Voting Agreement may be executed by the
parties in separate counterparts, each of which when so executed and delivered
shall be an original, but all such counterparts shall together constitute one
and the same instrument.

         7.9      CAPTIONS. The captions contained in this Voting Agreement are
for convenience of reference only, shall not be deemed to be a part of this
Voting Agreement and shall not be referred to in connection with the
construction or interpretation of this Voting Agreement.

         7.10     WAIVER. No failure on the part of Coulter to exercise any
power, right, privilege or remedy under this Voting Agreement, and no delay on
the part of Coulter in exercising any power, right, privilege or remedy under
this Voting Agreement, shall operate as a waiver of such power, right, privilege
or remedy; and no single or partial exercise of any such power, right, privilege
or remedy shall preclude any other or further exercise thereof or of any other
power, right, privilege or remedy. Coulter shall not be deemed to have waived
any claim available to Coulter arising out of this Voting Agreement, or any
power, right, privilege or remedy of Coulter under this Voting Agreement, unless
the waiver of such claim, power, right, privilege or remedy is expressly set
forth in a written instrument duly executed and delivered on behalf of Coulter;
and any such waiver shall not be applicable or have any effect except in the
specific instance in which it is given.


                                       7
<PAGE>   8
         7.11     CONSTRUCTION.

               (a) For purposes of this Voting Agreement, whenever the context
requires: the singular number shall include the plural, and vice versa; the
masculine gender shall include the feminine and neuter genders; the feminine
gender shall include the masculine and neuter genders; and the neuter gender
shall include masculine and feminine genders.

               (b) The parties agree that any rule of construction to the effect
that ambiguities are to be resolved against the drafting party shall not be
applied in the construction or interpretation of this Voting Agreement.

               (c) As used in this Voting Agreement, the words "include" and
"including," and variations thereof, shall not be deemed to be terms of
limitation, but rather shall be deemed to be followed by the words "without
limitation."

               (d) Except as otherwise indicated, all references in this Voting
Agreement to "Sections" and "Exhibits" are intended to refer to Sections of this
Voting Agreement and Exhibits to this Voting Agreement.


                                       8
<PAGE>   9
         IN WITNESS WHEREOF, Coulter and Stockholder have caused this Voting
Agreement to be executed as of the date first written above.


                                             COULTER PHARMACEUTICAL, INC.


                                             By:
                                                -------------------------------


                                             Name:
                                                   ----------------------------

                                             Title:
                                                   ----------------------------




                                             STOCKHOLDER


                                             -----------------------------------
                                                       (Signature)

                                             -----------------------------------
                                                     Print Name)


                                             Address:
                                                      -------------------------

                                                      -------------------------

                                                      -------------------------

                                             Facsimile:
                                                      -------------------------

<TABLE>
<CAPTION>

          Shares Held of Record             Options and Other Rights         Additional Securities
          ---------------------             ------------------------         ---------------------
                                                                             Beneficially Owned
                                                                             ------------------
<S>                                         <C>                              <C>
Common Stock                                Common Stock
             --------------                              --------------

</TABLE>


                                       9
<PAGE>   10
                                    EXHIBIT A

                            FORM OF IRREVOCABLE PROXY


         The undersigned stockholder of CORIXA CORPORATION, a Delaware
corporation ("Corixa"), hereby irrevocably (to the fullest extent permitted by
law) appoints and constitutes Michael Bigham, William Harris and Coulter
Pharmaceutical, Inc., a Delaware corporation ("Coulter"), and each of them, the
attorneys and proxies of the undersigned with full power of substitution and
resubstitution, to the full extent of the undersigned's rights with respect to
the outstanding shares of capital stock of Corixa owned of record by the
undersigned as of the date of this proxy, which shares are specified on the
final page of this proxy. (The shares of the capital stock of Corixa referred to
in the immediately preceding sentence are collectively referred to as the
"Shares.") Upon the execution hereof, all prior proxies given by the undersigned
with respect to any of the Shares are hereby revoked, and the undersigned agrees
that no subsequent proxies will be given with respect to any of the Shares.

         This proxy is irrevocable, is coupled with an interest and is granted
in connection with the Voting Agreement, dated as of the date hereof, between
Coulter and the undersigned (the "Voting Agreement"), and is granted in
consideration of Coulter entering into the Agreement and Plan of Merger, dated
as of the date hereof, among Coulter, Clearwater Acquisitions Corporation, a
Delaware corporation and a wholly owned subsidiary of Corixa ("Merger Sub"), and
Corixa (the "Merger Agreement").

         The attorneys and proxies named above will be empowered, and may
exercise this proxy, to vote the Shares at any time until the earlier to occur
of the valid termination of the Merger Agreement or the effective time of the
merger contemplated thereby (the "Merger") at any meeting of the stockholders of
Corixa, however called, or in connection with any solicitation of written
consents from stockholders of Corixa:

                  (i) in favor of the issuance of the shares of Corixa Common
         Stock in the Merger, and in favor of each of the other actions
         contemplated by the Merger Agreement; and

                  (ii) against the following actions (other than the Merger and
         the other transactions contemplated by the Merger Agreement): (A) any
         extraordinary corporate transaction, such as a merger, consolidation or
         other business combination involving Corixa; (B) any sale, lease or
         transfer of a material amount of assets of Corixa (other than in the
         ordinary course of business); (C) any reorganization, recapitalization,
         dissolution or liquidation of any of Corixa; (D) any removal of or
         change in a majority of the board of directors of Corixa; (E) any
         amendment to Corixa's certificate of incorporation; (F) any material
         change in the capitalization of Corixa or Corixa's corporate structure;
         and (G) any other action that is inconsistent with the Merger or that
         is intended, or could reasonably be expected, to impede, interfere
         with, delay, postpone, discourage or adversely affect the Merger or any
         of the other transactions contemplated by the Merger Agreement or the
         Voting Agreement.


                                      A-1
<PAGE>   11
         The undersigned may vote the Shares on all other matters.

         This proxy shall be binding upon the heirs, estate, executors, personal
representatives, successors and assigns of the undersigned (including any
transferee of any of the Shares).

         If any provision of this proxy or any part of any such provision is
held under any circumstances to be invalid or unenforceable in any jurisdiction,
then (a) such provision or part thereof shall, with respect to such
circumstances and in such jurisdiction, be deemed amended to conform to
applicable laws so as to be valid and enforceable to the fullest possible
extent, (b) the invalidity or unenforceability of such provision or part thereof
under such circumstances and in such jurisdiction shall not affect the validity
or enforceability of such provision or part thereof under any other
circumstances or in any other jurisdiction, and (c) the invalidity or
unenforceability of such provision or part thereof shall not affect the validity
or enforceability of the remainder of such provision or the validity or
enforceability of any other provision of this proxy. Each provision of this
proxy is separable from every other provision of this proxy, and each part of
each provision of this proxy is separable from every other part of such
provision.

         This proxy shall terminate upon the earlier of the valid termination of
the Merger Agreement or the effective time of the Merger.

Dated: October 15, 2000.

                                            STOCKHOLDER


                                            -----------------------------------
                                                      (Signature)



                                            -----------------------------------
                                                     (Print Name)



          Shares Held of Record
          ---------------------

Common Stock
             --------------


                                      A-2



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